Improvement in wrenches



S. B"`ARBY '& F. PERKINS.

Wrenches.

N0. 138,468. Patented May 6,18731.

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UNITED STATES PATENT GEEICE.

STEPHEN BARRY AND FRANK PERKINS, OF BRUNSWICK, OHIO.

IMPROVEMENT IN WRENCHES.

Specification forming part of Letters Patent No. 138,468, dated May 6,1873 application led January 17, 1873.

To all whom it may concern:

Be it known that we, STEPHEN BARRY and FRANK PERKINS, both of Brunswick,in the county of Medina and State of Ohio, have invented a certain newand Improved Wrench, of which the following is a specification:

This invention relates to that class of wrenches in which the handle isused for adjusting the jaws onto the nut; and consists of a straightshank, upon which slides a movable jaw, said jaw and shank being eachattached to the curved head of a handle by pinjoints, the oscillating ofhandle at its joint with the shank moving the loose jaw back and forthon the shank.

In the drawing, Figure 1 is a side elevation of our wrench.'

A is a straight shank having a cross-head, B, which forms a permanentjaw of the wrench. C is a movable jaw sliding on the shank A, and hastwo prongs, c c, forming a double jaw, one prong being cut or set backfrom theother, whereby the wrench may be adapted for adjustment to avariety of sizes of nuts. From A one side of the jaw C projects an arm,D. E

is a handle having a curved head, F, the shorter end of which is joinedto the shank A by a short connection, g, pivoted in slots in end of theshank and the head F. The other end of the head F is joined to the arm Dof the movable jaw C. The operation ofthe above-described wrench is verysimple: The adjustment of the jaws upon the nut being made by bearing tothe left on the handle, the movable jaw is made to bear against the nut,and the harder the nut turns the tighter the gripe, and there is nodanger of the wrench slipping.

Having described our invention, what we desire to secure by LettersPatent, is

The herein-described wrench,| consisting of the shank A, head B, movablejaw C with' arm D, handle E with curved head F, and the conneetion g,all combined and arranged substantially as described, and for thepurpose set forth.

STEPHEN BARRY. FRANK PERKINS.

Witnesses: l

GEO. W. TIEBITTs. D.. L. Woon.

